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STEPHEN C. MENDENHALL, OF RICHMOND, INDIANA.

A Lena-8 Patent No'. 70,877, ma November 12, 1867.

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TO vALL WHOM- IT -MAY CONCERN:

Be it known that I, STEPHEN C. MEDENHALL, of Richmond, county of Wayne, and State of Indiana, haveinvented a newand useful Improvement in Looms; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, making-part of this specification, in which- Figure 1 represents a perspective View of the loom.

Figure 2 is a side elevation of same. l

Figure 3 is aside elevation of pulley D.

The same letters of` reference where they occur in the drawings denote identical parts.

My invention consists mainly of an improvement in the mode of driving the treadle cam-shaft A and hatten Q by means of an endless belt or chain, B.

The treadle cam-shaftlA, whichis journalled horizontally a suitable distance in rear of the heddle-frame, isrotated by an endless chain or belt, B, extending from the driver D to a spurred pulley or sprocket, C, on

the right end of the camshaft, to enable the operator to stand square with and facing the front of the machine, vand to afford a crank motion on the plane'parallel to the motion ot' the hatten, and so that the crank shall be ut its most effective position whenthe hatten is in the act of striking up the Woof-thread.V I have provided a driving-spurred pulleyfor sprocket, D, and have connected thc'same to a similar sprocket, C, on the cam-shaft, by means of 'an endless-belt, B, having metallic eyelets. The winch or hand-crank D is aiixed at such position to the sprocket D, and the sprockets C and D are so connected by pitman P to theu hatten Q, as to bring the winch D and the pitmcn I -P' all or near their dead-points, and with theweight of the operator bearing upon the winch D, so as to. concentrate the greatest force at this special andimportant juncture of the operation, enabling lthe operator 'to lay up ythe Woof-thread rmly, and insuring a densev and heavy fabric without thenecessity offulling. lThe eyeleted belt B' b may be formed of canvas orleather, with metallic eyelets,or may be simply a metallic chain. The essential requisites of said belt are 4pliability without extensibility, and the faculty of communicating positive motion fromjpulley to pulley. l

Fig. 3 shows the mode of attaching the driving-spurred pulleyD to the frame of the loom by means of the plate S, which may he secured in its pla'ce by bolts or screws. The slot lain said plate is for the purpose of altering the position of the pulley D in order to tighten or loosen the chain or belt B, as may be necessary in the practical working of the machine. The pulley D is supported on a pin or wrist,f, working in slot u, and secured firmly in' its place by'mc'ans' of the: 4set-screw t'. Another and peculiar feature of plate S is that its position onzthe frame may be reversed, se as to place the slot u several inches lower relatively'to the frame of the loom, and thereby aecommodatcthe height of the crankvto the height vof lthe operator. 'This is an importantfeatnre of the invention, since 'it affords a ready means of accommodating the use of ,the loom either-'to grown-up persons orfchildren. i

What I claim, and 4desire to secure by LettersPatent, isp 1. I he'applicationto hand-looms of the endless metal-eyedbelt or metallic chain B b, in combinaticin with the spurred pulleysCand D, the whole being arranged and combined for the purpose of driving the cam-shaft A.

2. The described arrangement of endless metal-eyed belt or metallic'chain B b, spurred pulleys C and D,

lpitmen 1 P and hatten Q.

3. '.llhel described arrangement of the endless metal-.eyed belt or metallic chain B '6, spurred pulleys C' and D, pitmen P P, and hatten Q, and the crank D', when said crank has such a position on its pulley as to give and time the motions ofthe hatten, and the cam-shaft, as and for the purposes set forth.

44. I claim the reversible plate S,Iwith its slot u, or its. equivalent, for the purposes set forth and described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

STEPHEN e. MENDENHALL. Witnesses:

C. F. Gmusssn,

LAWRENCE MURrnY. 

